<template>
    <div class="cmt-container">
        <h3>发表评论</h3>
        <hr>
        <textarea placeholder="请输入要BB的内容（做多吐槽120字）" maxlength="120"></textarea>
        <mt-button type="primary" size="large">发表评论</mt-button>

        <div class="cmt-list">
            <div class="cmt-item" v-for="(item,i) in comments" :key="item.add_time">
                <div class="cmt-title">
                    第一楼{{ i + 1 }}用户 : {{ item.user_name }}&nbsp;&nbsp;发表时间 : {{ item.add_time | dateFormat }}
                </div>
                <div class="cmt-body">
                    {{ item.content === 'undefined'||item.content === '' ? '此用户很懒，嘛都没说': item.content }}
                </div>
            </div>

        </div>

        <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
    </div>
</template>

<script>
import { Toast } from "mint-ui"

export default {
    data(){
        return {
            pageIndex: 1, //默认展示第一页数据
            comments: []  //所有的评论数据
        }
    },
    created(){
         this.getComments();
         
    },
    methods: {
        getComments(){  // 获取评论
            this.$http.get("api/getcomments/"+ this.id +"?pageindex=" + this.pageIndex)
                     .then(result => {
                        if( result.body.status === 0 ){
                             // this.comments = result.body.message;
                             // 每当获取新评论数据的时候，不要把老数据清空覆盖，而是应该以老数据，拼接上新数据
                            this.comments = this.comments.concat(result.body.message);
                        } else {
                            Toast('获取评论失败！');
                        }
                    });
        },
        getMore() {
            // 加载更多
            this.pageIndex ++;
            this.getComments();
        }
    },
    props: ["id"] // 接受父组件传递的值
}
</script>


<style lang="scss" scoped>
.cmt-container{
    h3{
        font-size: 18px;
    }
    textarea{
        font-size: 14px;
        height: 85px;
        margin: 0;
    }

    .cmt-list{
        margin: 5px 0;
        .cmt-item{
            font-size: 13px;
            .cmt-title{
                line-height: 30px;
                background-color: #ccc;
            }
            .cmt-body{
                line-height: 35px;
                text-indent: 2em;
            }
        }
    }
}
</style>